help for the configuration of your computer: browser and Java
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• This page is obsolete since CheerpJ (used on this site) again allows you to view Java applets with all browsers, without a Java environment.
• On sites not using CheerpJ it is however possible to display the Java applets with Chrome and its CheerpJ add-on.
Warning ! you cannot use the Chrome extension on a page already using CheerpJ in its HTML code: (de)activate with the icon in the menu bar.
Download jre-8u241-windows-x64.exe from one of the pages https://www.java.com/en/download/ or https://java.com/en/download/manual.jsp,
save it, then install Java (double click).
It's the latest 64-bit version for Windows in early 2020; a newer version may be available when you read these lines.
If you are using a 32-bit browser, install the 32-bit version of Java; the two versions, 32 and 64 bits, coexist without problem.
Note: IE 32 bits offers to install 32 bit Java.
Launch the Java control panel (All control panels -> Java); now let's look at the different tabs:
• General: nothing to configure
• Update: choose your options
• Java: check that the installed version is activated; parameters are reserved for specialists
• Security: important settings
- make sure "Activate Java content ..." is checked
- security level: high (not "very high")
- list of authorized sites: add http://maths.ac-noumea.nc (neither https nor www.) to the list
- manage certificates: a matter for specialists
• Advanced: very technical, only a few options deserve your attention:
- hide the console
- check Mozilla family if you have chosen to use Pale Moon or Waterfox
- JNLP File/MIME Associations : always allow
- you can display the Java icon in the status bar (last option)
Restart your browser to activate Java.
Test on the home page of the site: you should see a gray dodecahedron in the vertical blue strip,
after authorizing the execution of the applet (security prompt).
Safari (versions after 11) is no longer Java-compatible: the choice of browser is therefore limited:
- Waterfox : file Waterfox Current 2020.02 Setup.dmg is Java-compatible (tested)
- Pale Moon : file palemoon-28.8.0.mac64.dmg (this version seems not Java-compatible)
Java installation and configuration
• Download jre-8u241-macosx-x64.dmg from the page https://java.com/en/download/manual.jsp, then install Java.
jre-8u241 is the latest version for Mac in early 2020; a newer version may be available when you read these lines.
• To find the Java control panel, click the Apple icon and from From System Preferences click the Java icon.
• Configure Java as for a PC (see above).
• Restart your browser to activate Java.
• Test on the home page of the site: you should see a gray dodecahedron in the vertical blue strip,
after authorizing the execution of the applet (security prompt).
home page
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You can view Java applets with Chrome and its CheerpJ extension. | January 2020 updated 18-05-2021 |